Well-strainer.



J H. MCEVOY. WELL STRAINER. APPUCATION FILED SEPT-24.1912.

Patentedfiept. 28, 1915.

INVILUVTOA a n J W! T/VESS/LS JOSEPH H. McEVOY, or HoUsToN, TEXAS.

- WELL-STRAINER.

Specification of Letters Patent. Patented Sept. 28, 1915..

Application filed September 24, 1912. Serial N 0.722146.

useful improvements in wellstrainers and particularly to plugs applied directly to an aperture used in pipe se ctionsfor wells, and has for its object the improvement of the general construction of strainer as disclosed.

in my former Patent #828,956 issued to me, August 21, 1906.

A further object of the invention is to provide a, strainer plug which is provided with slits, the intermediate port-ions forniing bars which extend the entire thickness through the same, in order to greatly strengthen the plug, whereby the plug will stand the excessive strain to wlnch it is subjected when in use.

A still further object of the invention is to improve the construction of the plug by forming a shoulder upon one end thereof adapted to receive the swagc portion of the pipe section when in position therein, in order to securely fasten the plug when in po--' sition within the opening in order to withstand the outward as well as the nward strain to which the plug Is sub ected when in use.

()thcr :llltl'flll'tlltl' objects and advantages of the invention will be hereinafter set forth and the novel fcaturcs thereof defined by the appended claims.

I am aware that I am not the first to secure a plug within an opening of a pipe.

section by swaging the portion of the wall of the opening in order to secure the plug therein, but in constructions of this character now in use. it has been found that it was impossible to obtain a smooth surface upon the outer wall of the pipe section by so swaging, and it has been found that plugs secured in this manner are not maintained against the outward strain to which they are subjected} and that by providing plugs with annular shoulders to receive the swage portions, the plug is secured inposition therein without any danger of it moving in either direction, and at the same time a swagc or upset portion of the pipe section is forced into the annular rabbet. forming the shoulder of the plug in such a manner that it is impossible for the plug to 'move outwardly after once being secured in position.

In the drawings.l igure 1, is a side elevation of a pipe section partly ,in section, showing the appli-ation of my improved construction of plug thereto and the manner of securing the same in position therein; Fig. 2, is an enlarged horizontal section taken on the line;22 plug arranged within a stepped opening be'- fore the wall of the opening has been swaged into the rabbet of the plug; Fig. 3, is a vertical enlarged section showing a plug in a similar position; Fig. 4, is a. verticalenlarged section showing the wall of the opening swaged into the rabbetof the plug in order to secure the same lirmly in position therein; Fig. 5, is a perspective view of a plug constructed in accordance with my invention; and Fig. (3, is an inverted plan view of the plug.

Like numerals of reference, refer to like "parts in the several figures of the drawings. In the drawings, 1 iiulicates'a-pipe section which is provided with a plurality of stepped openings arranged in any desired manneryezu-h opening having an annular shoulder 2 forming a. seat upon which the plug 3 is adapted to rest when in position, as shown. These openings (:tlLlm formed of any desired configuration. but in the 7 drawing, l have shown them circular, which is preferable, and the plugs of course, are constructed to conform to the openings in order to lit snugly therein. and to provide a pipe section with a plurality of strainers which are so arranged within the same that the section will not be weakened to any extent.

The plugs ii are provided with parallel slitst at one cud. which extend entirely across the same forming intermediate bars 5 which in this instance. are shown with straight side edges. but it is of courselnndcrstood that the outer faces of th same can be spread laterally by swaging or otherwise forcing the same into such a shape as to form inclined: or beveled faces. as disclosed in my former patent. and I wish it to be understood that I do not limit myself to the configuration of the bars formed by the slits as various shapes and designs can be of l igwl, showing a are only connected at cm loyed without departing from the spirit of y invention.

The slits at terminate short of theside walls of the plug adjacent the inner end, as

clearly shown in Fig. (3, the intermediate bars formed by said slits being connected to the body ofthe plug throughout the length of the plug in order to increase the strength of a plug constructed in this manner in order to provide a plug which will stand the strain to which it is subjected when in use, as I have found that a plug constructed tubular im-fo'rm with a head having parallel slits formed therein to provide-the strainer bars, are not as stiff and strong and will not stand as much strain as a thicker or longer plug, as it will be seen that the strainer bars certain points with the body of the plug, and that by forming a solid plug, as disclosed, the strainer bars extend the entire length of the plug which prevents the same from being forced 1nwardly or outwardly when in position within a pipe section, and also prevents the plug from yielding in any direction when they are being swaged in openings. By constructing a plug in this manner, the slits are formed in the outer end of the plug the desired depth and the remaining thickness of the plug between the slits is punched with a suitable instrument in order to provide slits which extend entirely through the plug, but-terminate short of the sidewalls. of the plug at the rear end of the plug. I v

This construction not only provides an exceedingly strong and durable strainer plug, but obtains? many advantages over plugs of this character now in use, as the slits at the outer end fextend erltirely across the end thereof forming astrariner with a reticu-..

substantially the sai'rle size as lated portion,

which it is placed, the

the opening in strainer bars'being' so connected to the body of the plug that the ends thereof are con nected directly to the wallof .the plug throughout their thickness which increases the strength of the bars as isdesirable in plugs of this character.

The plugs 3 are ends to form annular shoulders 6 which receive the swage portion 7 of the pipe section in which it is arranged when the pipe is upset by a suitable instrument. In the drawing, I have shown segmental upsets,

but it is of course understood that the entire wall of the opening ofthe pipe can be upset or the same can be upset at any of the desired points, in order'to force the metal into the rabbet of the plug against the shoulderv thereof so as to prevent the plug from-unoving outwardly within the opening after it has been once secured therein.

From the foregoing description, it will be "'struction of plug and securing a plug in position within the opencrease the wearing qualities to prevent the same from tirely across said rabbeted at their outer seen that I have provided an improved conalso novel means for ing formed in the pipe section in sucha manner that the plug at one end, is seated upon a shoulderand at its other end is abutted by an upset portion which co-acts with the shoulder of the plug in such a manner that after a plug has been once placed in position, the same will be securely fastened therein so as to withstand the strain to which'it is subjected. 'It will also be seen that I have improved the construction of plug in connection with the strainer bars by formin the bars of the same thickness as the thic lmess of the plug in order to inof the plug and being distorted when in use.

I claim: a 4

1. In a well strainer, the combination of a pipe section ing an annular. shoulder, of a plug seated upon said shoulder within said aperture,

said plug having an annular rabbet at its position wlthin'the drical body having an annular rabbet formed at one end and slits extending enrabbeted end and downwardly through said plug, said slits tel-xiiinating short of the circumferential wall of said plug at its other end.

4:. In a well strainer, the combination. with a pipe section provided with stepped openings of a plug arranged within said opening having an annular rabbet at its outer end, said plug being secured within said opening by swaging the adjacent wall of said opening within the rabbet of said plug. i

5. A strainer plug provided. with an annular rabbeted outer end and slits extending entirely across said outer end, said slits terminating short of the circumferential wall of' said plug at its inner end forming strainer bars having a thickness equal to the length of the plug. i

6. A strainer plug provided with a circumferential side wall and slits extending entirely across said plug at one end, said slits extending downwardly through the vided with. an annutar shoulder, of a plug arranged within said aperture against saic provided with an aperture havone endand termema g sholilder, said plug being secured Within of'said pipe section for locking said; plug said aSQ tiire by upsetting the adjacent wall within said aperture. cf sai "aperture. 'f In testimon whereof I afix my signature 7 "8.-.-I na;.=vwe1l strainer, a pipe section 1110- in presence pi two witnesses.

' JOSEPHVH. MGEVQY.

-5-'vided;wit lijia, stepped aperture, a, strainer plug pro 'ded with slits seated within said: Witnesses: aperture, said plug having an annular rab- P. GEO. MAUCKY, bet at bile and ho'reeeive the upset pertion HARRY S. GORDON. 

